Perhaps you've prepared a meal from an app that made you say "wow," but when is the last time a cooking app itself elicited that response? Panna is a dazzling vision of what's possible when such an app takes the form of a specialty magazine – complete with glossy production values – rather than a barrage of images and steps. Every bimonthly digital issue contains a dozen recipes from top celebrity chefs, each presented through a series of well-shot, high-resolution videos.

Apple's digital sous chef has already cleared valuable cabinet space, but what good are all those recipes if you don’t know the difference between confit and chiffonade? Top Chef University can get you up to speed, but at a significant price.